:root {
  --bg: #f4f6f9; --surface: #fff; --text: #1d2433; --muted: #657085; --line: #dde2ea;
  --primary: #1f4e8c; --primary-2: #163a69; --danger: #b42318; --ok: #1b7a3d;
  --approved: #43a35a; --approved-bg: #d6f0dc; --pending: #e0a400; --pending-bg: #fff1c2;
  --draft: #5b6578; --draft-bg: #dfe3ea; --rejected: #d4572a; --rejected-bg: #fbe0d6;
  --weekend: #eef0f4; --holiday: #fde3d6; --season: #eaf2ff; --sel: #bcd4ff; --full: #c0392b;
  --radius: 10px; --shadow: 0 1px 2px rgba(16,24,40,.06), 0 1px 3px rgba(16,24,40,.08);
  color-scheme: light;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--text); font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif; }
button, input, select, textarea { font: inherit; color: inherit; }
[hidden] { display: none !important; }
h1 { font-size: 1.4rem; margin: 0 0 1rem; }
h2 { font-size: 1.1rem; margin: 0 0 .75rem; }
h3 { font-size: 1rem; margin: 0 0 .5rem; }
.muted { color: var(--muted); font-size: .9rem; }
.error { color: var(--danger); min-height: 1.2em; margin: .5rem 0; white-space: pre-line; }
.row { display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; }
.spacer { flex: 1; }

.topbar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .7rem 1.25rem; background: var(--primary); color: #fff; flex-wrap: wrap; }
.brand { font-weight: 700; font-size: 1.1rem; }
.userbox { display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; }
.topbar .btn.ghost { color: #fff; border-color: rgba(255,255,255,.4); }
.topbar .btn.ghost:hover { background: rgba(255,255,255,.12); }

main { max-width: 1500px; margin: 0 auto; padding: 1.25rem; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 1.1rem; }
.login { max-width: 380px; margin: 8vh auto; }
.login label, .form label { display: block; font-weight: 600; margin: .75rem 0 .3rem; font-size: .9rem; }
input, select, textarea { width: 100%; padding: .55rem .65rem; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
input:focus, select:focus, textarea:focus, button:focus-visible { outline: 2px solid var(--primary); outline-offset: 1px; }
.login .row { margin-top: 1rem; }

.btn { border: 1px solid var(--line); background: #fff; border-radius: 8px; padding: .5rem .9rem; cursor: pointer; font-weight: 600; }
.btn:hover { background: #f1f3f7; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-2); }
.btn.danger { color: var(--danger); border-color: #f1c4bf; }
.btn.ok { color: var(--ok); border-color: #b9e2c6; }
.btn.ghost { background: transparent; }
.btn.small { padding: .25rem .6rem; font-size: .85rem; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.tabs { display: flex; gap: .25rem; margin-bottom: 1rem; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.tabs button { border: 0; background: none; padding: .6rem .9rem; cursor: pointer; font-weight: 600; color: var(--muted); border-bottom: 3px solid transparent; }
.tabs button.active { color: var(--primary); border-bottom-color: var(--primary); }
.tabs .badge { margin-left: .3rem; }

.layout { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 1.25rem; align-items: start; }
.side { display: grid; gap: 1rem; position: sticky; top: 1rem; }
@media (max-width: 1100px) { .layout { grid-template-columns: 1fr; } .side { position: static; } }

.notice { padding: .7rem .9rem; border-radius: 8px; background: #fff7e0; border: 1px solid #f3dd9c; margin-bottom: 1rem; }
.notice.info { background: #eaf2ff; border-color: #c4d8f7; }

.months { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 1rem; }
.month { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: .6rem .7rem .8rem; box-shadow: var(--shadow); }
.month h3 { text-transform: capitalize; display: flex; justify-content: space-between; align-items: baseline; }
.month h3 small { font-weight: 500; color: var(--muted); font-size: .75rem; text-transform: none; }
.grid7 { display: grid; grid-template-columns: repeat(7, 1fr); gap: 2px; }
.dow { font-size: .7rem; color: var(--muted); text-align: center; padding-bottom: 2px; }
.day { position: relative; aspect-ratio: 1 / 1; border: 0; border-radius: 6px; background: transparent; cursor: pointer; font-size: .85rem; padding: 0; display: flex; align-items: center; justify-content: center; }
.day:hover { box-shadow: inset 0 0 0 2px var(--primary); }
.day.season { background: var(--season); }
.day.weekend { background: var(--weekend); color: var(--muted); }
.day.holiday { background: var(--holiday); color: #8a3b12; }
.day.l-draft { background: repeating-linear-gradient(135deg, var(--draft-bg) 0 4px, #fff 4px 8px); box-shadow: inset 0 0 0 2px var(--draft); }
.day.l-pending { background: var(--pending-bg); box-shadow: inset 0 0 0 2px var(--pending); }
.day.l-approved { background: var(--approved); color: #fff; font-weight: 700; }
.day.l-rejected { background: var(--rejected-bg); color: var(--rejected); text-decoration: line-through; }
.day.sel { background: var(--sel) !important; color: var(--text) !important; box-shadow: inset 0 0 0 2px var(--primary) !important; }
.day.full::after { content: ""; position: absolute; top: 3px; right: 3px; width: 6px; height: 6px; border-radius: 50%; background: var(--full); }
.day.empty { cursor: default; visibility: hidden; }

.legend { display: flex; flex-wrap: wrap; gap: .4rem 1rem; font-size: .8rem; color: var(--muted); margin: 0 0 1rem; }
.legend span { display: inline-flex; align-items: center; gap: .35rem; }
.legend i { width: 14px; height: 14px; border-radius: 4px; display: inline-block; }

.stats { display: grid; grid-template-columns: 1fr auto; gap: .3rem .75rem; font-size: .92rem; }
.stats .v { font-weight: 700; text-align: right; }
.check { display: flex; gap: .4rem; align-items: flex-start; font-size: .9rem; margin: .25rem 0; }
.check.ok::before { content: "✔"; color: var(--ok); }
.check.bad::before { content: "✖"; color: var(--danger); }
.check.na::before { content: "–"; color: var(--muted); }

.list { list-style: none; padding: 0; margin: 0; display: grid; gap: .5rem; }
.list li { border: 1px solid var(--line); border-radius: 8px; padding: .5rem .6rem; display: grid; gap: .2rem; }
.list .top { display: flex; justify-content: space-between; gap: .5rem; align-items: center; }
.badge { display: inline-block; font-size: .72rem; font-weight: 700; padding: .1rem .45rem; border-radius: 99px; white-space: nowrap; }
.b-draft { background: var(--draft-bg); color: #49505e; }
.b-pending { background: var(--pending-bg); color: #7a5a00; }
.b-approved { background: var(--approved-bg); color: #145c2c; }
.b-rejected { background: var(--rejected-bg); color: #9b3412; }
.b-count { background: var(--rejected); color: #fff; }

table { width: 100%; border-collapse: collapse; background: var(--surface); font-size: .9rem; }
th, td { text-align: left; padding: .45rem .55rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: #f7f8fb; font-size: .8rem; color: var(--muted); position: sticky; top: 0; }
td.num, th.num { text-align: right; }
.table-wrap { overflow: auto; border: 1px solid var(--line); border-radius: var(--radius); max-height: 70vh; }
.warn { color: var(--danger); font-size: .82rem; margin: .15rem 0 0; padding-left: 1rem; }
.filters { display: flex; gap: .5rem; flex-wrap: wrap; align-items: end; margin-bottom: .8rem; }
.filters > * { width: auto; }
.filters label { font-size: .8rem; color: var(--muted); display: grid; gap: .2rem; }
td input, td select { padding: .3rem .4rem; }
td input.narrow { width: 5.5rem; }

.gantt { overflow: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.gantt table { font-size: .75rem; }
.gantt th, .gantt td { padding: 0; border: 1px solid #eef0f4; text-align: center; min-width: 24px; height: 24px; }
.gantt th.name, .gantt td.name { text-align: left; padding: 0 .5rem; min-width: 90px; position: sticky; left: 0; background: var(--surface); z-index: 1; }
.gantt td.we, .gantt th.we { background: var(--weekend); }
.gantt td.hol, .gantt th.hol { background: var(--holiday); }
.gantt td.g-approved { background: var(--approved); }
.gantt td.g-pending { background: var(--pending-bg); box-shadow: inset 0 0 0 1px var(--pending); }
.gantt td.g-rejected { background: var(--rejected-bg); }
.gantt tr.total td { font-weight: 700; }
.gantt td.over { background: var(--full); color: #fff; }

.settings-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 1rem; }
.form .row > label { flex: 1; }

dialog { border: 0; border-radius: var(--radius); box-shadow: 0 10px 40px rgba(0,0,0,.25); padding: 0; max-width: 480px; width: calc(100% - 32px); }
dialog form { padding: 1.1rem; }
dialog::backdrop { background: rgba(15,23,42,.45); }
dialog ul { padding-left: 1.1rem; }

.toast { position: fixed; bottom: 1rem; left: 50%; transform: translateX(-50%); background: #1d2433; color: #fff; padding: .6rem 1rem; border-radius: 8px; opacity: 0; pointer-events: none; transition: opacity .2s; max-width: calc(100% - 32px); z-index: 10; }
.toast.show { opacity: 1; }
.toast.err { background: var(--danger); }

@media (max-width: 600px) {
  main { padding: .75rem 16px; }
  .topbar { padding: .6rem 16px; }
  .months { grid-template-columns: 1fr; }
}